Hezbollah and its Palestinian ally Hamas said they launched rocket barrages at Israeli positions Saturday to avenge a strike that injured civilians in south Lebanon and the Gaza war toll.
Hezbollah has traded near-daily fire with Israeli forces in support of Hamas since the Palestinian militant group's October 7 attack on southern Israel triggered war in the Gaza Strip.
Earlier Saturday, Lebanon's state-run National News Agency said Syrian nationals, including children, had been injured after an "enemy drone targeted an empty four-wheel drive" near their tent, less than four kilometres from the border.
Doctor Mouenes Kalakesh who heads the Marjayoun government hospital said a woman and her three children, two of them minors, had been admitted for shrapnel injuries after the strike outside Burj al-Muluk.
Among them was an 11-year-old boy in critical condition after he sustained shrapnel injuries and a head wound, Kalakesh told AFP.
Hezbollah said it launched "dozens of Katyusha rockets" on Dafna, an area in Israel's north that the group said it was targeting for the first time, "in response to the attack on civilians".
On Wednesday, Hezbollah leader Hassan Nasrallah had warned his Iran-backed group would hit new targets in Israel if more civilians were killed in Israeli strikes.
Later Saturday, Hamas's armed wing, the Ezzedine Al-Qassam Brigades, said they fired a rocket salvo from south Lebanon towards an Israeli military position in the Upper Galilee "in response to the Zionist massacres against civilians in the Gaza Strip".
The Israeli army said a total of 45 "projectiles" had been fired from Lebanon Saturday afternoon, towards the occupied Golan Heights and the Galilee, reporting no casualties.
The army said it struck "the launcher... in southern Lebanon from which the projectiles were launched toward the Golan Heights," also targeting "an additional Hezbollah launcher".
On Thursday, Israeli strikes killed at least five people, including the commander of a Hamas-allied group in Lebanon, militant groups and a security source said.
On Tuesday, Lebanese official media said separate Israeli strikes in south Lebanon killed five Syrians, three of them children, with Hezbollah announcing rocket fire at Israel in retaliation.
The violence since October has killed at least 515 people in Lebanon, according to an AFP tally.
Most of the dead have been fighters, but they have included at least 104 civilians.
On the Israeli side, 18 soldiers and 13 civilians have been killed, according to Israeli authorities.